Synthesis of an Intermediate for(±)-Platphyllide Through Thionyl Chloride-Pyridine Mediated Rearrangement
摘要:
The cyclohexadienyl alcohol (3) on treatment with thionyl chloride and pyridine provided the tetrahydronaphthalene (4) whose transformation to the carbomethoxy tetralone (7), a key intermediate for platphyllide (8), has been accomplished in four steps.
An intramolecular C–H silylmethylation of benzylic alcohol derivatives catalyzed by a visible-light-photoexcited palladium complex was developed. Irradiation of the palladium complex with blue LEDs resulted in efficient activation of a C–I bond, and subsequent intramolecular radical arylation afforded siloxacycle products. Selective protonation or oxidation of the C–Si bond of the cyclized materials
开发了可见光光激发钯络合物催化的苯甲醇衍生物的分子内 C-H 甲硅烷基甲基化。用蓝色 LED 照射钯配合物可有效激活 C-I 键,随后分子内自由基芳基化得到硅氧烷环产物。环化材料的C-Si键的选择性质子化或氧化提供了苄醇衍生物的邻甲基化和邻羟甲基化衍生物。
Tricyclic amines as intermediates in the synthesis of fungicidal carboxamide derivatives
申请人:Syngenta Participations AG
公开号:EP2258690A1
公开(公告)日:2010-12-08
The present invention relates to compounds of formula (IIIa)
wherein Q, X, R13, R14, R15, and R16 are as defined in the claims.